From: Jack Bates <bk874k@nottheoilrig.com>
Date: Tue, 26 Nov 2019 18:07:27 GMT
Subject: Bug? clone ignores --git-dir
Message-ID: <7d28416e-c927-4cd3-bac2-d8bfd02ce949@nottheoilrig.com>

If you `git rebase --exec 'gulp runtests-parallel --runners user'` this 
project, the tests perform Git operations on various subprojects [1], 
but because Git exports `GIT_DIR` and `GIT_WORK_TREE`, they end up 
operating on the parent project instead.

Adding `--git-dir` and `--work-tree` overrides `GIT_DIR` and 
`GIT_WORK_TREE` [2], forcing the tests to operate on the correct 
repositories, however `clone` ignores `--git-dir`:

> git init repository
> git --git-dir git-dir clone repository directory
I'd expect Git to create a directory `git-dir` and put the index, etc. 
there, but instead it creates `directory/.git`, as usual. I'm not sure 
if this is a bug or the expected behavior?

[1] 
https://github.com/microsoft/TypeScript/blob/master/src/testRunner/externalCompileRunner.ts#L58
[2] https://github.com/microsoft/TypeScript/pull/35362